Much like the term "Rollerblading" is not encouraged or accepted among skaters, or Rollerblade itself for that matter, what used to be called Ultimate Frisbee is now simply known as Ultimate.

My son has found his equivalent to skating, in Ultimate. That is, it's a sport where he can run himself ragged and not notice all the exercise he's getting because he's so into it. He is as hooked on Ultimate as I am on skating.